Intrinsic Approach to Galois Theory of $q$-Difference Equations Lindsay Schakenbach Regele While today's fiercely partisan political

While today's fiercely partisan political climate makes it difficult to imagine a president forging consensus in Washington

FDR's Secretary of State was old and frail

one occurring amidst a distracting cacophony that included sloshing chamber pots and wailing street vendors

the Tower of London - even the Imperial War Museum

Authors present research related to predictive factors for bullying

Intrinsic Approach to Galois Theory of $q$-Difference Equations Lindsay Schakenbach Regele While today's fiercely partisan politicalThe Galois theory of di? erence equations has witnessed a major evolution in the last two decades. In the particular case of q di? erence equations, authors have introduced several di? erent Galois theories. In this memoir we consider an arithmetic approach to the Galois theory of q di? erence equations and we use it to establish an arithmetical description of some of the Galois groups attached to q di? erence systems.